Year % 2001 29.29099 2002 23.16868 2004 29.60063 2005 13.51247 2006 12.84861 2007 31.67952 2008 17.54978 2009 14.81646 2010 14.46546 2011 14.70623 2012 9.944364 2013 17.79728 2014 16.33419 2015 13.98456 2016 23.78117 2017 15.67463 2018 10.22202 2019 10.46762 2020 9.128272 2021 10.63158